By undermining your value.
By selling your work by hours, and not charging for all hours you spent to come to a place where you can do something in one hour, when someone else would take 10 hours or forever, doing the same thing.
No one will give you $10,000 or $100,000 when you ask for $1,000.
You may not be learning fast enough to have the confidence or even the skills. In that case, learning and increasing your worth is your responsibility.
Hope you don’t miss this chance.